15.19% is the change from 79 to 91
Calculation steps:
[( 91 - 79 ) ÷ 79] x 100 = 15.19%
Formula
Percentage change = [(91 - 79) / 79] x 100
Subtract the new number by the original number
91 - 79 = 12
12 ÷ 79 = 0.1518987341772152
0.1518987341772152 x 100 = 15.19%